Durability study of Pt3Ni1 catalysts as cathode in PEM fuel cells

Héctor R. Colón-Mercado, Hansung Kim, Branko N. Popov

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200 Citations (Scopus)

Abstract

The catalytic, corrosion and sintering properties of Pt/C and Pt 3Ni1/C catalysts are evaluated using an accelerated durability test (ADT). The catalytic activity and dissolution rate of Ni from a Pt3Ni1/C alloy catalyst are estimated in the same time domain. A strong correlation exists between the amount of Ni dissolved and the oxygen reduction activity of the catalyst. To compare the sintering resistance of both the Pt/C and Pt3Ni1/C catalyst, the particle size of the catalysts before and after the ADT is measured by using transmission electron microscopy. The Pt3Ni1/C alloy, due to anchor effects in its structure, shows high sintering resistance.

Original languageEnglish
Pages (from-to)795-799
Number of pages5
JournalElectrochemistry Communications
Volume6
Issue number8
DOIs
Publication statusPublished - 2004 Aug 1

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All Science Journal Classification (ASJC) codes

  • Electrochemistry

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